An impedance spectroscopy study in poly (butylene adipate) ionomers

*Corresponding author: Department of Physics, Faculty of Arts and Sciences, Firat University, 23169, Elazig, Turkey; fyhan(at)hotmail.com

Received 29 November 2003, accepted 4 May 2004 by U. Eckern

Matrix perturbation theory for driven 3-level systems with damping

Department of Physics, UMIST, PO Box 88, Manchester M60 1QD, UK; tobias.brandes(at)umist.ac.uk

Received 27 February 2004, accepted 30 March 2004 by B. Kramer

Unusual current-voltage characteristics of single crystalline and bicrystalline La_0.7Ca_0.3MnO₃ films

Institute of Physics, Augsburg University, 86135 Augsburg, Germany; jochen.mannhart(at)physik.uni-augsburg.de, christof.schneider(at)physik.uni-augsburg.de

Received 23 May 2003, accepted 11 May 2004 by U. Eckern

Quasistationary collapse to the extreme Kerr black hole

Institute of Theoretical Physics, University of Jena, Max-Wien-Platz 1, 07743 Jena, Germany; meinel(at)tpi.uni-jena.de

Received 14 May 2004, accepted 24 May 2004 by F. W. Hehl

On gravitational radiation and the energy flux of matter

Instituto di Fisica, Universidade de Brasilia, Caixa Postal 04455, 70919-970 Brasilia, Brasil; wadih(at)fis.unb.br

Received 10 May 2004, revised 25 May, accepted 25 May 2004 by F. W. Hehl

On the correspondence between a screw dislocation in gradient elasticity and a regularized vortex

Universite Pierre et Marie Curie, Paris, France; lazar(at)lmm.jussieu.fr

Received 14 May 2004, revised 27 May, accepted 27 May 2004 by F. W. Hehl

Errata: AdP 13, 124 (2004); AdP 13, 232 (2004)

pz(at)mpipks-dresden.mpg.de, f.tasnadi(at)ifw-dresden.de

Received 14 July 2004